Pump



Aug.. 7, 1923. l,464l35 H. B. JONES PUMP y l Filed Feb. ggg, 1922 esami-sheet 1 4% Lufe M zo 7*;

Aug. 7; 1923..

l 1H. B. JONES PUMP Filed Feb. 27. 1922 2 Sheets-Sheet 2 Patented ihnen Y, i923 nonfarm s.

Jonas, or onronefo, spinners, oo., or onroaeo, rrmnois, i o 'm Application .tiled February 2'?, 19%. Serial No. 539,374.

To @ZZ whom t may concern:

Be it known thatl, loivsno donne, a citizen of the United States, residing at Chicago, in the county of Cook State of Illinois, have invented certain new and useful improvements lumps7 of which the following is specification.

This invention relates to pumps, and refers more particularly to an air 'pump whichV is adapted for use on motor cars and the like, although in its broader aspects the invention is adapted for a Wide variety of uses. f y An exemplitication of my invention in preferred form is illustrated in the accom.- panying drawings in the manner following: Figure 1 is a side elevation of the pump; Figs. 2 and 3 are elevations looking7 respectively, toward thereof; f y

Figs. el, 5, and 6 are sectional views tal-ren, respectively, `on lines l-l of 35 5-5 of llig. 1, and 6-5of Fig. 1; and

Fig. l is a det-ail in section taken on line 7 7 of Fig. 5. lt muy be stated by Way of introduction that the present pump embodies .many of the features set forth in an application of Charles A. Anderson heretofore nled @cto` ber16,'19197 as Serial No. 331,0757 and is designed tobc mounted in operative relation with any suitable driving element such as the fan belt' of an automobile. The presenf' pump comprises two principal elements f and B, the former of which may be termed therotor and the latter the stator, The rotor is circular in forni so as to provide an outer periphery 10 adapted for enfWQj-ement by a driving element to impart rotation thereto. At the front side of the rotor element7 i. e., the side which is presunte to the operatoigthebody of the rotor is closedby al transverse wall 11 from which is extended a hub 12 providing-a bearing for an eccentric `Extending forvva lly from the hub is a shaft 11irotatably mounted in .sleeve which is fiXedly carried by the stator element B. The eccentric-irs removably carried by the stator as through the medium of screws 16 (see Figs. 5 and 6), andthe stator in turn is held in place as by means of bolt 17 screwed into the shaft end, the bolt head 18 hearing against a Washer 19 which over-- lies the ends` of the sleeve and stator body. f Jlccording to the construction described, the

the front and rear ends rotor element may be revolved freely `Within the body of the stator to Which the eccentric is fiiedly connected. i

The body of the rotor is formed With tivo cylinders 2() and 20 in which are mounted for alternate reciprocation pistons 21 and 21 so as to provide a multiple pump. Each cylinder is open at its rear end, and at its forwardend communicates through a passage formed longitudinallyin the shaft with a lateral passage 23. The parts just described are duplicatedfor each cylinder and similar reference numerals modified only by the addition of a f are applied to the second set thereofn The two passages 23 open upon opposite sides of the shaft and surrounding sleeve one registering Withlan outlet nipple 2d when the otheris inA conimunication with a` port 25 which opens to the atmosphere. ilrom the preceding d?- scription'itwill be. observed that with each inward stroke of the tivo pistons compressed air from one Will be forced through the associated shaft passage; toY be delivered through the nipple to a hose or pipe connection (not shown). c

` il-lach piston ,is iitted tightly Within its associa-ted cylinder with the aid ofrsuitable p ching, suchvas a leather gasket 30. Upon the rear side of each piston is mounted a plate 31 which carries a pair of ears 32 between whichV extends a pin 33 providing a pivotal connection with an arm 3a that is iixed to a roclr shaft 35 mounted Within suitable bearings 36 that are provided on the rear side ofthe rotor body. By reference to Fig. 3 it will be noted that the tivo cylinders wherein the pistons aremounted to reciprocate are arranged upon diametrioally oppo site sides of the circular body of the rotor7 and that the two rock shafts 35 are situated uponopposite sides ofA the two cylinders in substantial parallelism with a line extending between their axes, thus providing a very compact arrangement.y Through the transversetvall of the rotor are two openings 361 through'each of Which extends a second arm 37 which .is iixedly ycarried by each roel: sh The vforward end of each of these latter arms `is connected as by a pivot pin 38 to a head ,39, tvvo of these elements being pro- Iiected laterally from an elongated ring' plate n i0 which is in the general formation of an oval or ellipse. Arranged to engage With the interior periphery of the ring plate are um l ' nipple.

the passage 22 and outlet nipple 2.4, and si-4 multaneously there is a. registration of the port 25 with the other transverse passage 23 permitting air to enter the associatedy cylinder 20 during the suction stroke ofits piston. another 18 o relative tothe rotor, this relationship will be entirely reversed with the port 25 in communication'with Vthe other cylinder 20 wherein a suction is now taking* place, the cylinder 21 meanwhile dischargnglits compressed air through the outlet :Associated with the parts hereinbefore described are lubricating elements 4,-.5Vand 46 in the form of a reservoir adapted to hold oil which maybe fed by wicks 47 to the revolv-v ingfsurfaces of the shaft le and Vsleeve 15. Additionally aspiral groove'liS may be provided in the shaft periphery tobetter distribute the oil over its bearing surface.

,Among the advantages derivable from my invention are the compact and efiicient relationing of the operating parts. By using duplex piston mechanisms, I am enabled to build up an air. pressure in a very short. space of time without requiring any` appreciably greater power for the operation thereof. "'Indesigning a pump of this character,

the several parts have been so related to each V other; and to t-herotor andV stator bodies as man not to add greatly to the expense of their manufacture and to thesize of the apparatus. For these reasons it may be conveniently applied in place and operated.

'It is apparent to those skilled in the art that the details of construction may be Varied without in any way departing from the a or scope of the invention as set forth inthe appended claims.

Iclaim:

. 1 .'In pump, the'combination ofV rotor and stator elements in the former of which are a r`pair of cylinders, 4a piston in each cylinder, and means for' reciprocating the two pistons comprising two rock shafts oneV connected with each piston,` a single reciprocating member connected. torfboth rock,

shafts,` andan eccentric carried fast by the stator and adapted to reciprocate the member, substantiallycas described.'

2. In aV pump, 'the combination of rotor TWhen the stator has been .turned l simultaneously Y with and stator elements, the former having a circular body in which are formed two cylinders each having its axis parallel with the axis of the rotor and arranged diametrically on opposite sides thereof, a piston in each cylinder, and'means for operating the two pistons comprising an eccentriccarried fast by the stator, and connections from the eccentric to each piston adapted to operate the same in alternation, `substantially as vdescribed. j

3. In a pump, the combination Yof rotor and stator elements, the former having al circular body in which' are provided two cylinders each having its axis parallel with the rotor axis andaligned diametrically on opposite sides thereof, a piston in each cyl inder, and means for alternately operating each piston comprising in each instancea rock shaft mounted on the rotor to one side of the'two cylinders, a connection in each instance between the shaft Vand one piston, a reciprocable member connected with both rock shafts, and an eccentric carried by the stator adapted to move the reciprocableV member to thereby krock bothV shafts, substantially as described. A

vil. In a pump, the combination of rotor and stator elements, Vthe former having a circular body open at its rear end and closed at its forward end, a shaft extending outwardly from the closed end'lof the rotor body, on which sha-ft thefstator is mountedfor relative rotation, there being formed in the rotor a pair of cylinders each of Vwhich communicates with a passage extending lengthwise of the rotor shaft and thence lat'- erally' to opposite sides thereof, there being a pair of openings in the stator body adapt ed to register simultaneously withthe lateral passages inthe rotor shaftwhen they parts'are'in a predetermined.position of adjustment, a piston in each cylinder, and means connected-with the stator adapted to alternately reciprocate the two pistons whereby air compressed by one is forced outwardly through one' of the vshaft passages admission of air through the other shaft passage in response to the suction .stroke-of the other piston,V

substantially as described.

5. In a pump, the combination of rotor and stator elements, vthe former having a shaft extending through the latter, duplex piston mechanisms'in the rotor, an eccentric on the stator, and connections between the two piston mechanisms and the eccentric comprising two sets of elements and one common 'element adapted to'beengaged by the eccentric, substantially as described'.

6. In a pump, the combination of a rotor and stator, the former containing duplex piston mechanisms on diametrically opposite sides of its axis, a'shaft extending from the rotor through the stator, means for removably mounting the stator upon the :rotor shzif, :in eccentric removably secured izo the stator, an eiement engaged by the eccentric adapted to bo reoiprocated thereby, and oonnee'nions from said eleiiioiniJ one to eaoh. of the piston mechanisms adapted to reoipre cete the same in alternation, zhei'e being passages leading from each mechanism v mined relative positions, substantiaiiy es ey scribed.

n HWARD B. JQNES. Witness:

H. L. WEBSTER. 

